Computing machine



Feb. 1s, 1924.

C. E. PERRY COMPUTING MACHINE 1922` 5 Sheets-Sheet l Filed June 3 flbbozmuj Feb. 19 1924.

C. E. PERRY COMPUTING MACHINE Filed June 3 1922 5 Sheets-Sheet 2 Feb. 19 1924.

C. E. PERRY coMPUTINq MACHINE Filed June 5.

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Feb. 19', 1924.

5 Sheets-Sheet 4 mwN 1 c. E. PERRY COMPUTING MACHINE Filed June 3 lllmmlhnlllmlm ClPerrty. cb(

Feb. 19, 1924.

c. E. PERRY coMPunNG MACHINE Filed June s, i922 5 :Shee'bS-Sheet 5 Patented Feb. 19, 1924.

UNITED STATES CLARENCE E. PERRY. OF IRASBURG, VERMONT.

COMPUTING MACHINE.

Application filed June 3,

To all iti/wm t may concern:

Be it known that I, CLARENCE E. Pnnnr, a citizen of' the United States, residingr at lrasburg, in the county of Orleans and State of Vermont, have invented certain new and useful Improvements in Computing Machines; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked there on, which Jform a part of this specification.

This invention relates to computing machines and has for an object to provide a machine of improved type and mechanical construction whereby mathematical computations of various kinds as occasion may require may be determined from a. mere manual setting of the mechanism to correspond to the requirements of the computation.

A further object of the invention is to provide a mechanism embodying a plurality of bands or sheets carried upon rollers, such sheets to have printed thereon mathematical calculations corresponding to and co-acting with numerals or other mathematical designations appearing upon fixed parts oit said machine, inter-acting to designate the mathematiral result attained. by such proximate designations.

The machine which is disclosed in the present application is intended for mathematical calculations of various kinds, such for instance as addition, substr-action, multiplication or division, but all of such mathematical computations are not shown or even indicated on the drawings, it being understood, of course, that the same machine may carry different designations or other machines supplied for other types or kinds ot'. mathematical calculations, the showing in the drawing being merely that of multiplication but without in any way limiting the machine to a mere multiplying apparatus.

The object of, they invention is, therefore, to provide a casing having Asight openings therethrough in any desired number exposing to view certain sections of movable sheets carrying mathematical designations contigous to other mathematical designations appearing upon the casing, which, by the 1922. Serial No. 565,698.

system employed will designate to the user the result of the mathematical computation desired.

A further object of the invention is to provide a mechanism 'for mathematical calculations embodying a great degree ot elasticity ot use and range of operation, whereby mathematical calculations extending into very high numerals will be readily and almost instantly exhibited by a mere manual movement of the parts to correspond to some one of the mathematical designations given at the outset.

lVith these and other objects in view the invention comprises certain novel parts. units, elements, combinations. inter-actions and 'unctions, as disclosed in the drawings, together with mechanical and functional equivalents thereof, as will be hereinafter more fully described and claimed.

ln the drawings:

Figure l is a view of the machine in front elevation, the mathematical designations being only indicated and not carried out in full even to represent multiplication, to which the particular machine shown directed; i

Figure 2 is a view ot the mechanism ot the machine shown in iront elevation with the casing broken away;

Figure 3 is a top plan view of the mechanism oi the machine with the top of the casing broken away;

Figure 4t is a horizontal sectional view taken on line 4-t of Figure 2;

Figure 5 is an enlarged detail view of one of the sheets as carried about one of the rollers and as seen through one of the sight openings indicatingthe multiplication of 3 as a multiplier with various multiplicands appearing upon the casing and the results appearing upon the sheet, there being no assurance, however, that the computation as appearing in this figure is accurate;

Figure 6 is a detail View in side elevation of the adjustable stop showing a part of the casing in vertical section and on an enlarged scale, as indicated by line 6-6 of Figure l;

Figure 7 is an enlarged detail elevation of the indicator and stop, and

Figure 8 is an enlarged detail view of the It is obvious that with the machine constructed as above described the rotation of the hand-wheel will result in the exposing ot' multipliers. it the computation be multiplication, from the lowest desired unit, or fractions, as indicated, to such numbers as may be found desirable. It is desirable, however, that some means be provided tor readily stopping the rolling of' the sheets to exhibit the multiplier desired. For this purpose a stop plate 88 is mounted to slide horizontally and longitudinally of themachine upon guide rods 39. To co-act with this stop plate 3S a sprocket chain 40 is carried over sprockets 41 journaled adjacent the opposite ends oi the casing and also passing over idler sprockets 42 intermediate its ends. These idler sprockets are tor the purpose of niaintaining the proper relation of the different sides oit the sprocket chain relative to each. other' and to the other parts hereinbetore or hereinafter described. One oit the shafts 14 carries a sprocket 43 also engaging the sprocket chain 4l so that as the shaft 14 is rotated by the sprocket chain 24, the sprocket 43 will more the sprocket chain 40. As the shaft 14 is rotated in opposite directions it is obvious that the sprocket chain 40 will also be rotated in opposite directions. This sprocket chain 40 carries lugs 44 and 45 positioned to extend outwardly through a slot 46 in the casing and to engage against the stop plate 38. as indicated more particularly at Figure l..

The stop plate may be moved longitudinally along the rods 39 as hereinbetore mentioned and a scale 47 is provided adjacent the slot 46, said scale being provided with numerals designating the multiplier upon the sheets. The movement of this stop plate longitudinally of the rods 39 to a position upon the scale to correspond with the multiplier and the movement of the sprocket chain 40 to bring the lug 44 into engagement with the stop plate will automatically set the sheets to exhibit the multiplier to correspond to the nume-ral indicated by the plate. To more convenienty operate the i movable stop plate and to read the designations an indicator 48 is employed and the scale 47 is provided with notches 49, the indicator being provided with a lug 50 to engage in said notches, whereupon the indicator will indicate a numeral upon the scale 47 as shown more particularly at Figure 7. This indicator 48 is preferably mounted upon a spring 5l attached to the guide plate 38 and a hand piece 52 provided tor releasing the lug 50 from one ot the notches 49 so that the stop plate may he readiy moved along the rods 39 to the position desired. upon reaching which the release of the hand piece 52 and the action of the spring 5l will insert the lug 50 into the proper notch, so that the indicator 48 will engage the numoral upon the scale 47 to correspond to the multiplier.

As shown in the drawings and as used as a multiplying apparatus, the multiplicand extends to 200 and the result ot multiplying any multiplier by Q00 will, therefore, be limited to that ligure. As indicated on the scale 47 at Figure l, the multipliers also run from l to :ZOO so that the computation resulting from the use of these ranges wouldL be a maximum of 200 times 200. Means is provided, however, 'for multiplying greater numerals by the use of the lug 45. To properly distinguish between the Lug 44 and the lug 45, the lug 44 carries an index 53 provided in this instance with the numeral l visible from the liront. whereas the lug 45 is provided with an index 54 provided in this instance with the numeral Q, as indicated in dotted lines in Figure l, the `front of said index not being shown in the drawings.

By rotating the hand-Wheel 23 and therewith the several sheets 24 and 24 to move the index 53 in the direction indicated by Lits arrow at Figure 3, the multiplier will be made available up to 20() being the last numeral upon the scale, as shown at Figure l. The rods 39 are made of such length, as shown more particularly at Figures l and 3, that the stop plate 88 may be moved to the extreme right, permitting the lug 44 and its index 53 to pass through the L- shaped slot 55 at the right-hand end of the machine and sinmltaneously to permit the lug 45 and its index 54 to pass through the L-shaped slot 5G at the left-hand end of the machine. In this way the sheets 24 and 24 may be advanced through a greater range than is possible by the mere movement of the lug 44 through its range from fractions, or Zero, to 200, whereby in a multiplying computation ZOO is added to the result and the lug 45 and index 54 will move along as previously described for the lug 44 and index 53. It will be seen, especially 'troni Figure 8. that the index 54 is extended outwardly 'further than the index 53. The L- shaped slot 56 extends outwardly 'farther vthan the L-shaped slot 55, so that in action at Zero, the index 53 will engage against the cushion or stop 57 to prevent moving beyond Zero in that direction, whereas the index 54 will against the cushion or stop 58 to prevent moving that index beyond the maximum limit in that direction. In other words from the position of the lug 44 and index Zero. the device can be moved only in one direction, but may be moved in that direction by the removal of the stop plate 58 trom its path of movement to pass through the slot simultaneously bringing into action the index 54 coming outwardly through the slot 56, which will now travel along until it engages the stop plate 38 Which has heen adjusted to the addition o t E200 to the multiplier.

The range of the device is therefore, not 200 i aiiini n multiplier but 400 as a 'n'iuni lier it scemiA imnecesto shovr sent =liers apiaiiiuun'i amountI` although it is Vto he understood that theyY may or maj,r not he shon'n as the preference ot the user or maker niav nialze desirahle l In cperaiion. asf-inning that the of s i plier il. in the r.

l along the reaches the d l *L l. i. ln the oriainple shovfn. 3 being the nuiltiplie j. the indicator ivill he stopped ,i

r i as indicated more i The handvrheel Q3 will no move the several sheets until tr. engages against the stop plate upon eaeh/ et tl e several close through its respe ,tiv/ the multiplier 3 at the t ok shovrn at Figures l an then to the mn1 iolica the margins t sight opening and multiplieand to the i epperjring upon the sheet through the ht ope the result of such mathematical caler Will he read instantl.' and aecuratelv. i multiplicands appfearingv upon the margins of each of the sight openings i ll he progressive `from the lo'ivestr. Which mav he Q7 ae indicated in the drawings, or may? he fractions. as also indiea. to an;v amount desired. or inf-tance 1.000. as shoivn in TFigure l. ihe result ot computingy liv the use of the dei: will he. therefore. anv multiplier rroin zero. or a fraction, to F200 multiplied into a multiplicand ot env numher desired as fo` instance 2 to 1.000. Bv rotating the spr el() until the. in-

is in vai' limited either to scope. ran-,ee or identit?.v hv the numerals indicated and that auf.' range found desi able or found Within the scope of the machine or Within the neces.4 i s of the userl is Within the scope or the present invention and that the necessaryv designating numerals upon Le indicator casing, the scale or sheets 'for other than multiplication will he readily apparent to a mathematician or one skilled in the art no attempt l as heen shown here to discither this range of numerals and reindicate the manner of use. as it is sl ved such use will he preteell)r apparent.

llfhat I claim is: i. il computing machine comprising a g provided with a plurality olf sight openingsV a lilre aufuher ol? rollers positioned adjacent the sight openingen a similar group et rollers spaced troni the said first group sheets ivound about the pairs ot ot the tivo groups and visible in part A each of the sight opi'fnings. manual rea is for rotating trie rollersl selectively in noosite directions to Wind and unwind the sheets upon the rollers, numerical `groups positioned upon the casing adjacent the si glit openings7 other numerical groups posi- Jioned upon the traveling sheets and displayed through thc sight openings, said groups upon the sheets hearing mathematical relations each to the other, and a stop manuallv movable and numerically designated adapted to interrupt the movement of the sheets to displav numerical groups preleterinined by the positioning of the stop.

2. A computing machine comprising a pliualitj,y of pairs of rollers7 sheets Wound upon the rollers. manual means iior Winding and unwinding the sheets from the rollers to display var ving nunierical groups, a sprocket chain actuated by the rotation ot the rollers and moving in consonance' thererith, a sliding stop, a numerical scale ad] acent to and eo-acting with the sliding stop. and a lugT carried liv the sprocket chain positioned to engage againstthe stop and limit the movement of the traveling sheets.

3. A computing machine comprisingr a pluralitv ot pairs ot' rollers. a sheet Wound upon each ot the pairs ot rollers and provided With ditlierent hut mathematieallv-related groups et numerals. means to rotate the units of the several pairs of rollers in svnchronism, a sprocket chain carried hy and moving in consonance with the movement of the rollers. a stop adapted to he maiuiallj,7 moved and positioned. a lug carried hv the sprocllet ehr' 'n positioned to engage against the stop and limit the movenent et the sproelfet chain to display a group of numerals upon the sheet predetermined hv the location ot the stop, means facilitating the. inovmnent of the stop out of the path ot movement of the lug. and a seeond lug carried by the sprocket chain movahle into ero-acting posit-ion With the stop and determining liv its position the displaying of other groups of numerals upon the sheets.

4L. A calculating machine comprising a easing having a plurality of sight openings.

It Ln a like number of pairs of rollers, one unit of each pair being located adjacent each of said sight openings, a sheet Wound u on each of the pairs of rollers and provi ed with a group of numerals, and a controlling numeral identical on allsheets, manual means for rotating all of the said pairs of rollers in synchronism to display mathematicallyrelated groups of numerals simultaneouslyT through the sight openings, a scale carried by the casing thaving a series of numerals corresponding to the controlling numerals appearing upon the sheet, a stop movable in co-action with the scale, means to position the stop to indicate any one of the numerals on said scale, a sprocket chain aetuated by the rotation of the rollers, and a lug carried by the sprocket chain adjusted to engage the stop in such relation as to display the controlling numeral upon the sevoral sheets corresponding to the numeral on the scale indicated by the stop.

In testimony whereof I hereunto aliX my signature. f

CLARENCE E. PERRY. 

